__________ houses were knocked down in the earthquake.
| A．A great many of | B．The number of |
| C．A great number of | D．A great deal of |
– I wonder how much you charge for your services.
-- The first two are free________the third costs $30.
| A．though | B．until | C．while | D．before |
I’m told that languagepractising.com is a free website _____ learners can not just learn various
languages but also chat online.
| A．where | B．which | C．that | D．what |
Either you or any of your family ______ to attend the important banquet that is due tomorrow.
| A．are | B．can | C．have | D．is |
Tom,you and I could hardly work out the mathematic problem, _______?
| A．could you | B．couldn’t I | C．couldn’t we | D．could we |
Even many years after his divorce, he still couldn’t figure out the reason for his ____ marriage.
| A．to fail | B．to be failing | C．failing | D．failed |